Journal
MATERIALS CHEMISTRY FRONTIERS
Volume 4, Issue 8, Pages 2339-2345Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/d0qm00276c
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Funding
- JSPS KAKENHI [JP18J13699, JP18K05257]
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Along with the rapid development of economic integration and regional economization worldwide, the growth of green and sustainable resources has posed a major concern. Proton-exchange membrane fuel cells (PEMFCs) are examples of green, resource-conserving, and environmentally protective energy resources. Porous organic polymers (POPs), a new class of porous materials with high porosity, permanent pores, excellent stability, and easily modified functional units, can offer a good platform as proton-conducting electrolytes for fuel cells. However, a simple and general design to construct POPs with high proton conductivity presents a challenging project. For this study, we used simple benzene and aromatic benzene as building units through a facile and cost-effective process to create a series of POPs. We further prepared sulfonated POPs (S-POPs) with high-density sulfonic acid groupsviapost-sulphonation. The S-POPs displayed excellent proton conductivity up to 10(-2)S cm(-1)at 25 degrees C and 95% relative humidity (RH), and high conductivity up to 10(-1)S cm(-1)at 80 degrees C and 95% RH, which ranked top among the most proton-conducting POPs. These results suggest that construction of S-POPs offers a simple and universal way to evolve structural designs for high proton-conductive materials.
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